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Neocryptolepine and biscryptolepine, two new alkaloids, were isolated from the root bark extract of the African medicinal plant, Cryptolepis sanguinolenta (Lindl.) Schlechter (Periplocaceae), and their structures elucidated on the basis of spectral evidence. The ¹H and ¹³C NMR assignments of cryptoquindoline, a known artefact, were revised.